具有低开关频率的三电平有源前端变换器模型预测控制
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摘要
研究了一种具有低开关频率的三电平有源前端变换器AFEs低开关频率有限控制集模型预测控制LFCSMPC策略。该策略在一个控制周期内,同时施加有效电压矢量和零电压矢量。同时,引入降低平均开关频率控制目标项,并基于该目标函数求得有效电压矢量的最优作用时间,从而将带有最优作用时间的开关状态直接作用于功率变换器。该方法在兼顾控制性能的同时有效地降低功率器件平均开关频率,实现了低开关频率下的三电平AFEs高效运行。仿真结果表明,该方法在实际工程应用中具有一定的价值。
This paper introduces a new FCS-MPC with low switching frequency for AFEs.Both one active voltage vector and one zero voltage vector are applied during one control period.Meanwhile,the control target of low average switching frequency is introduced into a cost function.Based on the function,the selected voltage vector with the optimal action time can be obtained and the optimal voltage vector with optimal action time can be applied in threelevel AFEs.Therefore,the method not only realizes the desired control performance but also effectively reduces the average switching frequency of power devices,which can realize the efficient operation of three-level AFEs with low switching frequency.The simulation results can provide reference for its application in actual projects.
This paper introduces a new FCS-MPC with low switching frequency for AFEs.Both one active voltage vector and one zero voltage vector are applied during one control period.Meanwhile,the control target of low average switching frequency is introduced into a cost function.Based on the function,the selected voltage vector with the optimal action time can be obtained and the optimal voltage vector with optimal action time can be applied in threelevel AFEs.Therefore,the method not only realizes the desired control performance but also effectively reduces the average switching frequency of power devices,which can realize the efficient operation of three-level AFEs with low switching frequency.The simulation results can provide reference for its application in actual projects.
引文
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[15]PENG F Z,LAI J S.Generalized instantaneous reactive power theory for three-phase power systems[J].IEEE Transactions on Instrumentation&Measurement,1996,45(1):293-297.
[16]张永昌,谢伟,李正熙.PWM整流器功率脉动最小化方法的研究[J].中国电机工程学报,2013,33(18):57-64.
[2]YARAMASU V,WU B,ALEPUZS,et al.Predictive control for low-voltage ride-through enhancement of three-level-boost and npc-converter-based pmsg wind turbine[J].IEEE Transactions on Industrial Electronics,2014,61(12):6 832-6 843.
[3]HABIBULLAH M,LU D C,XIAO D,et al.Predictive torque control of induction motor sensorless drive fed by a3l-npc inverter[J].IEEE Transactions on Industrial Informatics,2017,13(1):60-70.
[4]HABIBULLAH M,LU D C,XIAO D,et al.Finite-state predictive torque control of induction motor supplied from a three-level npc voltage source inverter[J].IEEE Transactions on Power Electronics,2016,32(1):479-489.
[5]SCOLTOCK J,GEYER T,MADAWALAUK.Modelpredictive direct power control for grid-connected npc converters[J].IEEE Transactions on Industrial Electronics,2015,62(9):5 319-5 328.
[6]XIA C,LIU T,SHI T,et al.A simplified finite-controlset model-predictive control for power converters[J].IEEE Transactions on Industrial Informatics,2014,10(2):991-1 002.
[7]ZHANG Y,PENG Y.Performance evaluation of direct power control and model predictive control for three-level AC/DC converters[C]//Energy Conversion Congress and Exposition.IEEE,2015:217-224.
[8]SONG W,MA J,ZHOU L,et al.Deadbeat predictive power control of single-phase three-level neutral-pointclamped converters using space-vector modulation for electric railway traction[J].IEEE Transactions on Power Electronics 2016,31(1):721-732.
[9]SEBAALY F,VAHEDI H,KANAAN H Y,et al.Design and implementation of space vector modulation-based sliding mode control for grid-connected 3l-npc inverter[J].IEEE Transactions on Industrial Electronics 2016,63(12):7 854-7 863.
[10]Edpuganti A,Rathore A K.A survey of low-switching frequency modulation techniques for medium-voltage multilevel converters[C]//ndustry Applications Society Meeting.IEEE,2015:4 212-4 228.
[11]RATHORE A K,HOLTZ J,BOLLER T.Generalizedoptimal pulse-width modulation of multilevel inverters for lowswitching-frequency control of medium-voltage high-power industrial ac drives[J].IEEE Transactions on Industrial Electronics,2013,60(10):4 215-4 224.
[12]WANG Z,WU B,XU D,et al.Hybridpwm for high-power current-source-inverter-fed drives with low switching frequency[J].IEEE Transactions on Power Electronics,2011,26(6):1 754-1 764.
[13]EDPUGANTI A,RATHORE A K.Optimal low switching frequency pulse-width modulation of nine-level cascade inverter[J].IEEE Transactions on Power Electronics,2014,30(1):482-495.
[14]EDPUGANTI A,RATHORE A K.Optimal Low-Switching Frequency Pulsewidth Modulation of Medium Voltage Seven-Level Cascade-5/3H Inverter[J].IEEE Transactions on Power Electronics,2015,30(1):496-503.
[15]PENG F Z,LAI J S.Generalized instantaneous reactive power theory for three-phase power systems[J].IEEE Transactions on Instrumentation&Measurement,1996,45(1):293-297.
[16]张永昌,谢伟,李正熙.PWM整流器功率脉动最小化方法的研究[J].中国电机工程学报,2013,33(18):57-64.